In this July 25, 2014 photo, an oil train moves through the area South of St Paul, Minn.  Railroad documents released by the state Department of Public Safety show about 50 trains carrying crude oil from North Dakota are passing through Minnesota each week. The documents obtained by The Associated Press were first reported Saturday, July 26 by the Star Tribune. (AP Photo/The Star Tribune, Connor Lake)  MANDATORY CREDIT; ST. PAUL PIONEER PRESS OUT; MAGS OUT; TWIN CITIES LOCAL TELEVISION OUT
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